Impurity scattering in highly anisotropic superconductors and interband sign reversal of the order parameter

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:549838

Mazin, I I ^[1]; Golubov, A ^[2]

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1. Carnegie Institution of Washington, DC (United States)
2. Research Centre, Juelich (Germany)

The authors discuss various mechanisms that can lead to interband sign reversal of the order parameter in a multiband superconductor. In particular, they generalize Abrikosov-Gor`kov solution of the problem of weakly coupled superconductor with magnetic and nonmagnetic impurities on the case of arbitrary order parameter anisotropy, including extreme cases as d-pairing or interband sign reversal of the order parameter, and show that interband scattering by magnetic impurities can stabilize an interband sign-reversal state. They discuss a possibility of such state in YBa{sub 2}Cu{sub 3}O{sub 7} in the context of various experiments: Josephson tunneling, neutron scattering, isotope effect measurements.

• OSTI ID: 549838
• Report Number(s): CONF-960163-; ISBN 0-8194-2070-0; TRN: 98:000462
• Resource Relation: Conference: Photonics West `96: conference on quantum well and superlattice physics VI, San Jose, CA (United States), 27 Jan - 2 Feb 1996; Other Information: PBD: 1996; Related Information: Is Part Of Spectroscopic studies of superconductors. Part B: Tunneling, photoelectron, and other spectra; Bozovic, I.; Marel, D. van der [eds.]; PB: 370 p.; Proceedings/SPIE, Volume 2696
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ORDER PARAMETERS
SUPERCONDUCTIVITY
YTTRIUM OXIDES
BARIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
ANISOTROPY